John j



J. J. SIBLEY.

Tuck Creasing Attachment for Sewing Machines.

Patented Sept. 6, 1870.

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UNITED STATES PATENT OEEIoE.

JonN J. SIBLEY, on NEW YORK, NY.

IMPROVEMENT IN TUCK-CREASING ATTACHMENT FOR SEwlNG-MACHlNESl To all whom it may concern:

Be it known that I, JOHN J. SIBLEY, of New York city, have invented a new and useful Improvement in Tuck-Oreasers for Sewing- Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, forminga part of this specification, and to the letters of reference marked thereon, in which correspondingletters represent corresponding parts.

The object of my invention is to provide sewing-machine operators with a tuck-creaser which shall make a perfect crease, and obviate the objectionable wear andtear of, and

consequent injury to the sewing-machine unavoidably attending the use of tuek-creasers operated by the needle-arm;

The nature of my invention consists in providing a new and improved tuck-creaser for sewing-machines, composed of two spurred wheels, one of which is supported on the inclined end of a shaft in such manner that its face, which is beveled, moves in a plane at an angle to the face of the other, so that the material to be creased isfed in or passed between the faces of the two wheels, (which come together at one point,) it having first been raised somewhat in a rib by a thin wheel, or equivalent, located a short distance in front of said wheels, and is thereby pinched and definite] y creased in passing them.

Description.

that presses the wheel B upon the material,

I, the cloth-gage; J, the standard which supports the creasing mechanism; K, the lifter; L, the guide-pin; M M, the frame which supports the shaft on which the creasing-wheels revolve.

The operation is as follows: The material, as fed forward in the operation of the machine, is passed. under wheel B, which is pressed down upon it by spring H in such manner that the material rotates the wheel B on its shaft E, whereby the pin Frotates the wheel 0, and the thin wheel or blade D so lifts the material that it passes between the faces of the revolving wheels B and O at the point where they come nearest together, and creases it as it passes.

It is obvious that the details of mechanism above shown may be readily varied or modified without changing the character of my in vention. For example, the creasing wheels might be supported on separate shafts. The device for elevating the material may be made stationary, and in place of wheel B two wheels might'be used, one of said wheels being made adjustable for the purpose of creasing tucks of different widths.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of wheels eratin g together in substantially described, to faces thereof.

2. The combination of wheels B, O, and 1). operating together, substantially as and for the purpose set forth.

JO] TN J. SIBLEY.

B and O, op-

themanner crease material between the Vitnesses:

H. O. COVERT, (J. M. SIBLEY. 

